sump

noun \ ˈsəmp \
Updated on: 9 Nov 2017

Definition of sump

1 : a pit or reservoir serving as a drain or receptacle for liquids: such as
a : cesspool
b : a pit at the lowest point in a circulating or drainage system (such as the oil-circulating system of an internal combustion engine)
c chiefly British : oil pan
2 British : crankcase
3
[German Sumpf, literally, marsh, from Middle High German — more at swamp]
a : the lowest part of a mine shaft into which water drains
b : an excavation ahead of regular work in driving a mine tunnel or sinking a mine shaft
4 : something resembling a sump : sink 2

Recent Examples of sump from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sump.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of sump

Middle English sompe swamp — more at swamp


SUMP Defined for English Language Learners

sump

noun

Definition of sump for English Language Learners

  • : a low part or area where liquid collects when it drains from something


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